PT-2025-40908 · Flowise · Flowise

Im-Soohyun · Published 2025-10-06 · Updated 2025-10-17 · CVE-2025-61687

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Flowise version 3.0.7

Description Flowise, a drag & drop user interface for building customized large language model flows, contains a file upload issue. Authenticated users can upload arbitrary files without proper validation, enabling attackers to persistently store malicious Node.js web shells on the server. The system does not validate file extensions, MIME types, or file content during uploads. Uploaded shells expose HTTP endpoints capable of executing arbitrary commands if triggered. The uploaded shell does not automatically execute, but its presence allows future exploitation via administrator error or chained vulnerabilities.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2025-61687

GHSA-35G6-RRW3-V6XC

Affected Products

Flowise

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/61xxx/CVE-2025-61687.json · Exploit
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-35g6-rrw3-v6xc · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-35g6-rrw3-v6xc · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-61687 · Security Note
• https://osv.dev/vulnerability/CVE-2025-61687 · Vendor Advisory
• https://github.com/FlowiseAI/Flowise · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/components/src/storageUtils.ts#L1104-L1111 · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/server/src/utils/index.ts#L1950-L1954 · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/components/src/storageUtils.ts#L533-L541 · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/server/src/controllers/attachments/index.ts#L4-L11 · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/server/src/utils/createAttachment.ts#L118-L126 · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/components/src/storageUtils.ts#L170-L175 · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/server/src/routes/attachments/index.ts#L8 · Note
• https://github.com/FlowiseAI/Flowise/blob/d29db16bfcf9a4be8febc3d19d52263e8c3d0055/packages/server/src/services/attachments/index.ts#L7-L16 · Note
• https://t.me/cveNotify/137526 · Telegram Post